I've been asked by my mother-in-law to fix some barbecue chicken in the smoker for her birthday party. You know it needs to be good, so I need some good recipes. She wants it smoked, but then with some sauce on it. After doing a basic brine on the chickens, I was going to do a simple rub of onion powder, garlic powder, paprika, salt or olive oil and soysauce and then smoke them. Might do 1 of each because I'm fixing 3 chickens. As they near the end and have reached the appropriate temp, should I cover them with some barbecue sauce and leave them in the smoker for 10-15 minutes longer? Should I use my favorite sauce from the store for that? Anyone have a good recipe to share? Does this sound like a good plan?